Concept
Version 9
Created by Boundless
Carbon Oxides and Carbonates

The Carbonate Ion
The carbonate ion has three resonance structures. The true structure of the carbonate is an average of these three resonance structures.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Carbonate-ion-resonance-2D."
http://en.wikipedia.org/wiki/File:Carbonate-ion-resonance-2D.png
Wikipedia
CC BY-SA.